Nietzsche called this ressentiment which is commensurate with things like 'slave morality,' so you don't need me to give you a primer on Nietzsche to know that it's bad, and it is, apparently, flourishing in the blogosphere.

The French word for this predicament -- ressentiment (pronounced "ruh-sohn tee-monh") - denotes a public psychopathology in which gnawing insecurities, envy, and hatreds that have been nursed by many in private (and posted anonymously in comments online) converge eventually in scary social eruptions that diminish the participants even while seeming to make them brave participants in great crusades.